From: Aurelien Jarno <aurelien@aurel32.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH] target-arm: use clz32() instead of a for loop
Date: Thu, 15 Oct 2009 23:14:52 +0200 [thread overview]
Message-ID: <20091015211452.GC7071@volta.aurel32.net> (raw)
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
target-arm/helper.c | 6 ++----
1 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 701629a..656b5df 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -7,6 +7,7 @@
#include "gdbstub.h"
#include "helpers.h"
#include "qemu-common.h"
+#include "host-utils.h"
static uint32_t cortexa8_cp15_c0_c1[8] =
{ 0x1031, 0x11, 0x400, 0, 0x31100003, 0x20000000, 0x01202000, 0x11 };
@@ -394,10 +395,7 @@ uint32_t HELPER(uxtb16)(uint32_t x)
uint32_t HELPER(clz)(uint32_t x)
{
- int count;
- for (count = 32; x; count--)
- x >>= 1;
- return count;
+ return clz32(x);
}
int32_t HELPER(sdiv)(int32_t num, int32_t den)
--
1.6.1.3
next reply other threads:[~2009-10-15 21:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-15 21:14 Aurelien Jarno [this message]
2009-10-18 14:21 ` [Qemu-devel] [PATCH] target-arm: use clz32() instead of a for loop Laurent Desnogues
2009-10-23 0:34 ` Stuart Brady
2009-10-23 7:04 ` Aurelien Jarno
2009-10-23 12:47 ` Stuart Brady
2009-10-23 14:38 ` Aurelien Jarno
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